The counterargument here is that there is a distinction between an arbitrary line in the sand (C++ stdlb is bad) and using a text-generating machine to perform work for you, beginning to end. You are correct that as a responsibly used tool, LLMs offer exceptional utility and value. Though keep in sight the laziness of humans who focus on the immediate end result over the long-term consequences.
It's the difference between the employee who copy-pastes all of their email bodies from ChatGPT versus the one who writes a full draft themselves and then asks an LLM for constructive feedback. One develops skills while the other atrophies.